WEST PALM BEACH, Fla. (AP) — President Donald Trump appeared no closer to signing an end-of-year COVID-19 relief and spending bill Sunday as millions lost unemployment aid, the government barreled toward a mid-pandemic shutdown and lawmakers implored him to act.

Trump blindsided members of both parties and upended months of negotiations when he demanded last week that the package — already passed the House and Senate by large margins and believed to have Trump's support — be revised to include larger relief checks and scaled-back spending.

If he continues his opposition, the federal government...